/* ======================= */
/* 1. 변수 선언 및 모드별 색상 */
/* ======================= */
:root {
  --color-text-white: #ffffff;
  /* 라이트모드 색상 */
  --color-bg-light: #ffffff;
  --color-text-main-light: #111111;
  --color-text-muted-light: #555555;
  --color-accent-light: #0077cc;
  --color-box-bg-light: #f9f9f9;
  --color-border-light: #cccccc;
  --color-shadow-light: rgba(0, 0, 0, 0.05);
  --color-hover-light: #005fa3;
}

/* 라이트모드 활성화 시 변수값 변경 */
body.light-mode {
  --color-bg: var(--color-bg-light);
  --color-text-main: var(--color-text-main-light);
  --color-text-muted: var(--color-text-muted-light);
  --color-accent: var(--color-accent-light);
  --color-box-bg: var(--color-box-bg-light);
  --color-border: var(--color-border-light);
  --color-shadow: var(--color-shadow-light);
  --color-hover: var(--color-hover-light);
}

body:not(.light-mode) .hero {
  background: linear-gradient(to right, #0a0a0a, #111);
}

/* ======================= */
/* 2. 기본 바디 및 텍스트 */
/* ======================= */
body {
  background-color: var(--bg);
  color: var(--text-main);
  font-family: "Pretendard", sans-serif;
  margin: 0;
  padding: 0;
}

/* ========== 2. 기본 스타일 ========== */
body {
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: "Pretendard", sans-serif;
  margin: 0;
  padding: 0;
}

/* ========== 3. 컨테이너들 ========== */
.cont1 {
  background: var(--color-bg);
  color: var(--color-accent);
  display: flex;
  align-items: center;
}

/* ======================= */
/* 2. cont2 섹션 변수 적용 */
/* ======================= */
.cont2 {
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 60px 20px;
  width: 100vw;
  height: 100vh;
  background: var(--color-box-bg);
  color: var(--color-text-main);
}

.box-wrap {
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* 박스 모음만 따로 flex 줄로 정렬 */
.box-row {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  /* 작은 화면에서 줄바꿈 허용 */
}

.box {
  background: var(--color-box-bg);
  color: var(--color-accent);
  box-shadow: 0 3px 8px var(--color-shadow);
  width: 30vw;
  height: 60vh;
  border-radius: 10px;

  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  /* 제목 가운데 */
  justify-content: center;
  text-align: center;

  transform: translateY(50px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
  flex-shrink: 0;
  /* 잘리는 것 방지 */
}

.box.animate {
  transform: translateY(0);
  opacity: 1;
}

.box h3 {
  margin-bottom: 20px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.box p {
  text-align: left;
  /* 본문은 왼쪽 정렬 */
  max-width: 90%;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* 반응형 - 화면 작아지면 세로 정렬 */
@media (max-width: 950px) {
  .cont2 {
    height: 100%;
  }

  .box-row {
    flex-direction: column;
    align-items: center;
  }

  .box {
    width: 90%;
    max-width: 400px;
  }
}

.cont5 {
  background-color: var(--color-box-bg);
  color: var(--color-text-main);
  padding: 3rem 2rem;
}

.cont5 input,
.cont5 textarea {
  background-color: var(--color-bg);
  color: var(--color-text-main);
  border: 1px solid var(--color-border);
}

.cont5 input::placeholder,
.cont5 textarea::placeholder {
  color: var(--color-text-muted);
}

.cont5 button {
  background-color: var(--color-accent);
  color: var(--color-text-white);
  font-weight: bold;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.cont5 button:hover {
  background-color: var(--color-hover);
}

/* ========== 4. 텍스트 강조 ========== */
.highlight {
  color: var(--color-text-white);
  /* 텍스트 컬러는 흰색 유지 (변경 없음) */
  background: linear-gradient(90deg,
      var(--color-highlight-gradient-start) 0%,
      var(--color-highlight-gradient-end) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: neon-glow 2s ease-in-out infinite alternate;
}

@keyframes neon-glow {
  from {
    text-shadow: 0 0 5px var(--color-accent), 0 0 10px var(--color-accent),
      0 0 20px var(--color-accent);
  }

  to {
    text-shadow: 0 0 10px var(--color-accent), 0 0 20px #00ffff,
      0 0 30px #00ffff;
  }
}

/* ========== 5. 아이콘 이미지 ========== */
.icon-grid .icon-item img {
  opacity: 0.85;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.icon-grid .icon-item img:hover {
  transform: scale(1.1);
  opacity: 1;
}

/* ========== 6. 타임라인 ========== */
.timeline {
  max-width: 800px;
  margin: 0 auto 60px;
  border-left: 4px solid var(--color-accent);
  padding-left: 20px;
  color: var(--color-text-main);
}

.timeline-item {
  margin-bottom: 40px;
  position: relative;
}

.timeline-item::before {
  content: "";
  width: 16px;
  height: 16px;
  background-color: var(--color-accent);
  border-radius: 50%;
  position: absolute;
  left: -30px;
  top: 4px;
}

.timeline-item h3 {
  font-size: 1.2rem;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.timeline-item p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* ========== 7. 프로세스 리스트 ========== */
.process-ul li strong {
  color: var(--color-accent);
}

.process-ul {
  list-style: none;
  position: relative;
  padding-left: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  border-left: 2px solid var(--color-border);
  color: var(--color-text-main);
}

.process-ul li::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background-color: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--color-accent);
}

/* ========== 9. 이미지 컬럼 ========== */
.image-column img,
.image-column video {
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  /* shadow는 별도변수로 안뺐음 - 유지 */
  object-fit: cover;
}

/* ========== 11. 기타 텍스트 색상 ========== */
p,
span,
.sub-text,
.section-intro,
.icon-title-wrap .text-wrap span,
.step-detail p {
  color: var(--color-text-muted);
}

/* ========== 12. 히어로 섹션 ========== */
.hero {
  position: relative;
  overflow: hidden;
  height: 100vh;
  background: linear-gradient(to right, var(--color-bg), #e0e0e0);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  color: var(--color-text-main);
}

#typed-text {
  font-size: clamp(1.2rem, 7vw, 5rem);
  color: var(--color-accent);
  white-space: normal;
}

.hero p {
  font-size: clamp(1rem, 4vw, 2rem);
  margin-bottom: 2rem;
  color: var(--color-text-muted);
}

/* ========== 13. 전체화면 섹션 ========== */
.fullscreen-section {
  width: 100vw;
  min-height: 100vh;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  padding: 4rem 2rem;
  color: var(--color-text-main);
}